Well if they include a plane in the sim, then it should work like it is supposed to work. Autopilot is a very basic function. Maybe people do not want to buy 3rd party modules, or people can not afford it. Every plane included should work like they are suppose to. I am using the free version on game pass. I want to buy the deluxe premium super uber version, or whatever they are calling it. But I will not until the included aircraft and other aspects work as supposed to. Im sure there are more people wanting to buy the deluxe version but are holding off until the bugs are fixed. So it is in MS best interest to fix the bugs so they can sell copies. The other thing, flight sims these days are a niche. Not like they were back in the 90’s. Now that it is going to be released on the xbox, which personally I do not think it should be, however this is a chance to bring in new people to the hobby. If the planes are buggy then I think it will die hard on the xbox.
Maybe I misunderstood your intent. I am not being critical, just saying that eveything that is included in the simulator should be bug free and they should put development into the sim to make it that way.